If none of these groups suit you, feel free to suggest a new one, along with a set of ranks that can go with it.

To join a Usergroup, go into the "User CP" and look on the menu for "Group Memberships" under the Miscellaneous section. If you still have troubles changing your usergroup (and you've made it to 220 posts), ask for help!

Common Abbreviations

AFAIK As far as I know
AFK Away from keyboard
ASAP As soon as possible
BBL Be back later
BRB Be right back
FAQ Frequently-ask question(s)
FWIW For what it's worth
FYI For your information
IIRC If I recall/remember/recollect correctly
IM Instant message
IMHO In my humble opinion
IMNSHO In my not so humble opinion
LOL Laughing out loud
OMG Oh my God
OTOH On the other hand
PM Private message
RL Real life (that is, when not chatting)
ROFL Rolling on the floor laughing
SO Significant other
TMI Too much information
TTFN Ta-Ta for now
WTG Way to go!
WYSIWYG What you see is what you get
YMMV Your mileage may vary.